As nature slowly transitions from summer to the warm, golden tones of autumn so does jewellery as was richly in evidence at ...

Deciding how to cut a gemstone is inevitably one of the most difficult decisions ... a playing field that includes spinel, zircon, garnet, ruby, and sapphire (figure 2). Test cuts are often used ...

Australian mineral exploration and development company Peak Minerals has signed a binding letter of intent to acquire the ...

Petrology is the study of the macroscopic and microscopic mineralogical and chemical composition of rocks. In addition to assessing sedimentary, igneous, and metamorphic rocks that are accessible ...

There are 30 results, Your applied filters are, gem stone amethyst, ...

There are 8 results, Your applied filters are, gem stone amethyst, ...